98

98 is an integer that follows 97 and precedes 99. It is even and composite, with prime factorization 2 × 7^2. Its divisors are 1, 2, 7, 14, 49, and 98. The sum of proper divisors is 73, making 98 a deficient number. It is not a square or a cube and it is not a triangular number.

In various numeral systems and encodings, 98 has several representations. In binary it is 1100010, in octal 142, and in hexadecimal 0x62. In Roman numerals it is written as XCVIII. In the ASCII character set, decimal 98 corresponds to the lowercase letter 'b'. The 98th day of the year is April 8 in common years (April 7 in leap years). The atomic number 98 designates Californium (Cf), a radioactive actinide discovered in the mid-20th century.

Notable uses and references. The number is widely recognized in popular culture, including the musical group 98 Degrees, an American contemporary R&B group formed in the 1990s. In mathematics and science, 98 often appears as an example of an even, composite number with the prime factorization 2 × 7^2, illustrating basic divisor properties and base conversions.